I arrived for a non member cooling to much call. I first inspected the indoor furnace and found the systems to be running with the thermostat to be calling for cooling. I removed the doors to the furnace and the door switch turned the system off. I turned the thermostat to the off position and supplied powerful back to the furniture. I cycled the system four times from the thermostat and found the system to shut off and turn on when told to. I could not inspect the evaporator coil due to the evaporator box is installed in a plywood and metal box around the evaporator coil box. I recommend to have the system repaired before any further issue present it’s self in the future this system is 26 years old. I inspected the condenser and found the systems to be running and the high side schrader core to be broken and was leaking refegerant once I remove the cap. I tried to remove and replaced the schrader core but it will not remove. I tightened the cap back down on the high side king valve